TOPIC Advanced Filtering for Future 5G 
AREA Microwave & RF 
SPEAKER Dr Wong Peng Wen , Universiti Teknologi PETRONAS, MALAYSIA 
DATE 13 February 2015, Friday 
TIME 10:30 am to 11:30 am 
VENUE E3-06-06, Engineering Blk E3, Faculty of Engineering, NUS 
FEES No Charge 

Mobile wireless communication has encountered an explosive growth in global scale over the past decades mainly driven by the massive use of smartphones, tablets. In order to meet the increasing demands, the revolutionary 5G networks with unprecedented data speeds are explored. In 5G application the demands on adaptive filtering such as tunable filter at the front-end electronics is highly desirable however the device insertion loss and linearity factors are most critical in determining the efficiencies of overall system. For example, a 5G system situated in a high density signal environments and high amplitude interfering signals can seriously desensitize the receivers or intermodulate with the clutter signals. This talk introduces the design techniques for reconfigurable bandpass and bandstop filter with high linearity performance. Furthermore, the proposed solution of femtocells and picocells augmenting traditional macrocells base station which results in aggregation of non-contiguous of bandwidth across wide frequency range unleashes another great challenge and opportunity for novel multiband filter design. A new emerging multi-band filter using hybrid filtering function is introduced. This is the first multiband low pass prototype network proposed which allows classical ladder synthesis and frequency transformation for the construction of multiband bandpass filter. It is also highly desirable to have a single bandstop filter with multiband rejection in order to address the dense utilization of 5G mobile broadband networks which are very likely suffering from multi-channel interferences. A new multiband bandstop filter is introduced where the conventional design techniques had concentrated only on single band bandstop response due to the lack of multiband low pass prototype and frequency transformation technique. 

Wong Peng Wen is a member of IEEE and Microwave Theory & Techniques (MTT) Society. He graduated from University of Leeds in 2005 with BEng (1st Class Hons.) degree in Electrical & Electronic Engineering. He received Switched Reluctance Drive Award for the best student in EE Engineering. He then joined Intel Malaysia and worked as a Test R&D engineer where he received Intel Recognition Award for business support. He also received research funding from Ministry of Defence, UK for his PhD study in University of Leeds, UK from 2007-2009. During his PhD, he was involved in UK DTI funded project, developing process design kits for multilayer system-in-package modules. Currently he works as a senior lecturer in Universiti Teknologi Petronas and received outstanding researcher award and publication award in 2013 and 2014. His research interests include reconfigurable filter, lossy filter design, and passive filter miniaturization techniques. He has secured various research grants from government and industries since 2008 and published more than 50 papers including an article in IEEE microwave magazine. He serves as reviewer for IEEE Transaction on Microwave Theory and Technique, IEEE Wireless & Component Letter, IET Antenna & Propagation and PIERS. 


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